Quick-Change Adapter with Detachable Anti-Rotation Carrier

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Solution Overview

Problem

Existing quick-change systems for construction machinery require significant manufacturing effort due to welded joints for attaching a coupling element carrier, making it difficult to replace or adjust the coupling element carrier without laborious alignment work.

Innovation Solution

A detachable form-lock connection secured against rotation is used to connect the coupling element carrier to the bolt-shaped coupling element, facilitated by a positive-locking contour and screws, allowing easy detachment and replacement of the coupling element carrier.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If welded joints are used to attach the coupling element carrier to the coupling element, then the connection is strong and secure, but the manufacturing effort and complexity increase significantly

Engineering Contradiction:

Improveconnection strengthVSAvoidmanufacturing effort

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The patent replaces the welded mechanical connection system with a threaded fastening system using screws and threaded holes. This substitution maintains the strength and security of the connection while dramatically reducing manufacturing complexity, as threading can be done with standard machining operations rather than requiring welding equipment and processes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The coupling element carrier is designed as a separate, detachable component that can be independently manufactured and then assembled to the coupling element via threaded holes. This segmentation allows each component to be manufactured separately using simpler processes, avoiding the need for complex welded assemblies while maintaining structural integrity.

Inventive Principle:

Principle #1Segmentation

2Reliability

If welded connections are used for the coupling element carrier, then the connection is secure against rotation, but the alignment work becomes laborious and time-consuming

Engineering Contradiction:

Improveanti-rotation securityVSAvoidalignment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The coupling element carrier is pre-equipped with threaded holes and positioning features during manufacturing, so that when assembly is required, the components can be quickly aligned and fastened without requiring complex on-site alignment work. The positive-locking contour and threaded connections are already prepared, enabling rapid assembly.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The welded connection system that requires precise alignment and welding operations is replaced with a threaded fastening system using screws. This mechanical substitution allows for easier alignment through threaded holes and provides secure anti-rotation capability through the threaded connection and positive-locking contour without requiring laborious welding alignment procedures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Duration of action of stationary object

If the coupling element carrier is permanently attached via welding, then the connection is durable, but the ease of replacement decreases when damage occurs

Engineering Contradiction:

Improveconnection durabilityVSAvoidreplacement ease

Core Design Contradiction:

Duration of action of stationary objectVSEase of repair

Solution Approach 1:

The connection system transitions from a static, permanent welded joint to a dynamic, detachable threaded connection. The coupling element carrier can be easily removed and reattached multiple times through the threaded holes and screws, providing both durability through secure fastening and ease of replacement when damage occurs, without the permanent commitment of welding.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The design allows the coupling element carrier to be easily discarded (removed) if damaged and recovered (reinstalled) on a new coupling element. The threaded connection system enables quick removal and replacement, whereas welded connections would require cutting and extensive rework. This facilitates maintenance and repair operations.

Inventive Principle:

Principle #34Discarding and recovering

Data Source

PatentEP3730697B2Adapter for quick change system and quick change system comprising such an adapter

Publication Date: 2025.09.03 OILQUICK DEUT KG

Figure 1~2
Figure 3~4
Figure 5~6

AI summary

The invention relates to an adapter (1) for a quick-change system for changing attachments on a construction machine, comprising two parallel, bolt-shaped coupling elements (5, 6) arranged between parallel sidecars (4) at a predetermined distance from each other for connecting the adapter (1) to a quick coupler (2), and a coupling element carrier (16) detachably attached to one of the coupling elements (6) for holding coupling elements. To facilitate simplified attachment, the coupling element carrier (16) is directly connected to the bolt-shaped coupling element (6) via a detachable positive-locking connection (26, 27) to prevent rotation.